CN103890141A - Wet quenching tower for quenching hot coke - Google Patents
Wet quenching tower for quenching hot coke Download PDFInfo
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- CN103890141A CN103890141A CN201280050650.6A CN201280050650A CN103890141A CN 103890141 A CN103890141 A CN 103890141A CN 201280050650 A CN201280050650 A CN 201280050650A CN 103890141 A CN103890141 A CN 103890141A
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- quenching
- coke
- tripping device
- wet
- water
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B39/00—Cooling or quenching coke
- C10B39/04—Wet quenching
- C10B39/08—Coke-quenching towers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
- B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
- B01D45/10—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators which are wetted
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Separating Particles In Gases By Inertia (AREA)
- Coke Industry (AREA)
- Carbon And Carbon Compounds (AREA)
- Chimneys And Flues (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to a wet quenching tower for quenching hot coke, comprising a quenching chamber (2), comprising a quenching spray device (3) above the quenching chamber (1) for dispensing quenching water, comprising a flue (4) placed on the quenching chamber (2), and comprising at least one separating device (6) which is arranged horizontally or at a slanted angle relative to the vertical, which can be vertically permeated, and which has a plurality of lamellae (7). Each of the lamellae has a non-branching cross-section, flow paths (8) being formed between each two adjacent lamellae (7). According to the invention, the flow paths (8) formed between each two lamellae (7) change direction multiple times and correspondingly have a serpentine shape. The invention also relates to a method for quenching coke using the aforementioned wet quenching tower.
Description
The present invention relates to the wet quenching tower for hot coke being carried out to quenching, its with coke quencher, with above this coke quencher for discharge the quenching spray unit of coke quenching water, be placed in flue in coke quencher and with at least one flatly or in vertical direction with pitch angle vertical through-flow tripping device that arrange and that there are multiple thin slices, each thin slice has a kind of without branch cross section, is forming flowing-path separately in situation between two contiguous sliceses.
Wet quenching tower for carrying out direct cooling and for avoiding, hot coke burnt down still hot coke after process of coking.For this reason, coke is toppled over and is entered quenching car from smelting furnace aperture, then delivers to wet quenching tower by quenching car.In wet quenching tower, under the help of quenching spray unit, with the hot coke of water spray, form immediately thus a large amount of steam, these steam are also referred to as coke quenching steam.Consider suddenly coolingly and because water evaporate the volume increase producing, also generated a large amount of dust and it carries secretly upwards together with coke quenching steam.
In practice, the consumption of water and the discharge of dust granules have formed the deciding factor aspect wet quenching efficiency and environmental pollution.In the flue being placed in coke quencher, arrange through-flow tripping device just to make it possible to reclaim most as far as possible coke quenching water, and thereby can isolate most as far as possible dust granules.What must remember in this case, is with regard to its separability, to have equally different characteristics as water droplet on the one hand with as dust granules on the other hand due to different distribution of sizes and different proportion.For separate water droplets, provide multiple in direction vicissitudinous flowing-path.Heavier-than-air water droplet can not be followed the variation in this direction and correspondingly be deposited on the wall of tripping device.By contrast, in known wet quenching tower, provide specific means, these means for example can produce at tripping device place eddy-currents, thereby make also can isolate dust granules.
In order to make dust separate, according to the known a kind of wet quenching tower with tripping device of DE 2 100 848 C, this tripping device have substantially flat, with multiple thin slices of the nose portion of end.
The wet quenching tower of known a kind of feature with initial description from DE 40 11 431 A1.On the basis of the wet quenching tower of the tripping device with good grounds DE 2 100 848 C, a kind of wafer topography of horned figure form is proposed.The combination of the nose portion of this end and bent angle is intended to realize the two good separation of dust and water droplet.But the shortcoming of existence is to be especially difficult to clean completely in nose portion region.In addition, the separating power relevant to water droplet still needs to improve.
DE 101 138 90 C1 and DE 101 225 31 A1 have disclosed has multiple tripping devices for improving the wet quenching tower of separating power in situation separately.The thin slice of multiple simple bent angles is also provided here, and these thin slices have nose portion or the branch with T shape profile in its end.The shape of this thin slice profile is for further reducing the discharge of solid in quenching process.In order especially to increase the separation to dust, will produce turbulent flow.But, there is in this case following shortcoming, that is, tripping device has increased resistance to flow greatly, and turbulent flow generation structure is also difficult to clean simultaneously.
Finally, DE 46 313 A1 have disclosed a kind of wet quenching tower, and wherein tripping device is flow through on fluid water level land.These independent thin slices have a kind of branch of fin configuration on cross section, and this has just formed a capture chamber opening contrary with flow direction.So a kind of shape of these thin slices is not suitable for vertical through-flow tripping device, because like this, in the region of these branches, only may clean very difficultly and remove the dust of deposition.
Under this background, the present invention based on object be a kind of wet quenching tower of explanation, although this wet quenching tower has simple designs, allowed effective separation of water droplet and be easy to clean.
On the basis of wet quenching tower of feature with initial description, realizing according to object according to the present invention is to be, these flowing-paths that form between two thin slices in situation are separately to change more than once its direction.These flowing-paths have a kind of winding raod line, and this route is being optimized by emphasis aspect water droplet separation.
And according to prior art, always be mentioned be specially for dust Separation Optimization and be also difficult to clean thin slice, in the context of the present invention, explanation be a kind of configuration of optimizing aspect water droplet separation, wherein flowing-path at least twice changes its direction.Thin slice can have a kind of with curve or with the waveform of bent angle in succession.Surprisingly, in the context of the present invention, this tripping device can move by a kind of same mode that has realized enough dust separation.
The fact that the present invention allows is thus that dust is not only directly separated, and separates by being bonded in water droplet.Likely with a spraying plant, the coke quenching steam that is raised to top, quenching spray unit is sprayed, thereby decline and realize the combination that increases condensation, increases water droplet size and enhancement dust to realize further temperature, like this, also can meet high emission request although simplified tripping device.In the time that fluid in the vertical direction flows through tripping device, the coke quenching steam of rising, by deflection more than once, that is to say at least twice, and water droplet can not unrestrictedly be followed mobile due to its inertia.
In theoretical method, become and be apparent that, the size of water droplet is conclusive for the centrifugation at these thin slice places at tripping device.But in the case of the deflection of defined, large water droplet is the direction that can not change due to the inertia increasing, little water droplet still can be carried secretly by the coke quenching steam rising, and along slice surfaces not upwards.Because deflection has repeatedly realized the separating power of improving.
In addition, must remember, the thin slice of the angulation simply described in prior art can cause about sepn process strict demand.By contrast, in situation of the present invention, may make the distribution of sizes of water droplet in the profile of thin slice and coke quenching steam suitable.Thus, in the production process of tripping device, can change cross-sectional profiles and can be by the extra spraying of coke quenching steam being changed to the distribution of sizes of water droplet, and this cross-sectional profiles and distribution of sizes can be adaptive for coming each other.Also may in the operational process of wet quenching tower, optimize water droplet size by the good spraying of adaptation.For example, can be for example along with the variation of the direct observed value of water droplet size or indirectly from determining that the discharge angle of discharging controls spraying.
According to the present invention, the mode that tripping device is arranged is vertically through-flow for making it have.In this case, must remember, there is no further measure, the liquid separating at these thin slice places can drip in the coke quenching steam of getting back to rising downwards and may again be carried secretly at least in part.
Vertically through-flow in order to allow, tripping device can be that level arranges exactly.But, also tripping device may be arranged in vertical direction with angle of inclination in addition.Can utilize a kind of condensation product side direction that tilts to arrange specifically to allow these thin slice places to discharge.For this purpose, the mode that these thin slices are obliquely installed is easily to form along these single sheets the gradient that a kind of condensation product is laterally discharged along it.In this respect, also thin slice may be provided as to the structure of discharging with the side direction causing corresponding being obliquely installed in the situation that.Therefore, specifically likely, these flowing-paths are to be formed by multiple relatively large curves in succession substantially, and these thin slices have extra fine structure to form canal shape impression along thin slice simultaneously.
In order to allow the production of thin slice simple as far as possible, according to an advantageous modification of the present invention, provide thus these thin slices and there is basic thickness uniformly along its cross section.This thin slice can be for example by metal sheet or webs of plastic are formed easily and are produced.This simple production also makes it likely the mode with a kind of module, arranges these thin slices with the form of multiple groups.
In the context of the present invention, locate endways to have save branch, that is to say, for example fin branch or T-branch.Preferably, do not provide at the entrance section of flowing-path and outlet place yet need to increase investment at manufacture view and also clean more complicated acute angle bending.In an especially preferred improvement project, as seen on flow direction, the end of these thin slices is straightly or substantially straightly to extend and stop in this respect.If flowing-path, without branch, without bent angle or analogue, also can be realized roughly width uniformly along whole route.
In order to keep these thin slices of tripping device there is no dust and dust accumulation, it is favourable cleaning with water continuously or cleaning with water off and on.For this purpose, can provide a brush device for cleaning, this brush device for cleaning is from below, clean tripping device from below or from above and below.For this purpose, brush device for cleaning can be equipped with the spray nozzle of multiple suitable orientations.In addition, in the situation that intermittently cleaning with water, provide a kind of control device, this control device is to arrange for the corresponding intermittent actuation of this spraying plant.Due to these thin slices preferred this simple wave shape wave or zig-zag in the context of the present invention, just may clean simply.Specifically, thin plate can be so shaped that the corresponding moisture film in cleaning course can touch their whole surface.
Theme of the present invention is also the method for carry out quenching by above-mentioned wet quenching tower, hot coke is for example transported to coke quencher by quenching car from coke oven, with coke quenching water to hot coke carry out cooling in case form contain steam and dust granules coke quenching steam, make the coke quenching steam rising in flue guide tripping device, the water droplet that makes to be wherein combined with dust because the repeatedly deflection along flowing-path separates, and is cleaned tripping device by brush device for cleaning continuously or off and in tripping device.
Conventionally, to carry out coke quenching steam spraying to these risings at water above quenching spray unit and before arriving this at least one tripping device, to also realize increase, coke quenching steam cooling of water droplet mean sizes and increase thus condensation and the extra combination of dust granules in coke quenching steam.Specifically, can occur spraying mode be to make to be met for the strict regulation of particle emission.
In the context of the present invention, specifically likely, in the flowing-path between these thin slices, produce a kind of laminar flow.The in the situation that of laminar flow, produced on the whole low especially resistance to flow, and the thin slice of these corresponding simple shapings also can especially easily be cleaned by brush device for cleaning.Specifically, these thin slices can be shaped as in carrying out clean process by brush device for cleaning and also may carry out complete wetting by spray water.
In the context of the present invention, this wet quenching tower also can have at least one extra tripping device substantially, and this extra tripping device also has the multiple thin slices with the flowing-path that repeatedly direction changes easily.
Diagrammatically explain the present invention by the accompanying drawing of only having shown an exemplary embodiment below, and in the accompanying drawings,
Fig. 1 shows a wet quenching tower with vertical section,
Fig. 2 is with a details that turns over the flue shown in Fig. 1 that the side-view of 90 ° shows this wet quenching tower,
Fig. 3 a and Fig. 3 b show the profile of multiple thin slices of a tripping device of this wet quenching tower with the section of the line A-A along Fig. 2.
Fig. 1 shows a kind of for hot coke being carried out to the wet quenching tower of quenching, and in the exemplary embodiment, hot coke is to be incorporated in a coke quencher 2 by a quenching car 1.In order to make hot coke cooling and avoid burning down, quenching spray unit 3 waters are sprayed to the coke being accommodated in quenching car 1, and result has formed the coke quenching steam that contains steam and dust granules.A flue 4 is placed in coke quencher 2 tops, and in this flue, coke quenching steam is to rising.
In flue 4, from coke quencher 2, above quenching spray unit 3, provide a spraying plant 5, with coke quenching water, the coke quenching steam rising is carried out to extra spraying by this spraying plant.This spraying plant for further to coke quenching steam carry out cooling and therefore and realize increase condensation.In this respect, also increase average water droplet size, and therefore in (that is to say above being arranged at) tripping device 6 thereafter, made separation become easier at flow direction.Finally, due to by this extra spraying of spraying plant 5, be also incorporated in drop from the extra dust granules of coke quenching steam.Therefore dust granules is cleared out from coke quenching steam by this spraying plant to a certain extent.
Tripping device 6 is designed to vertically through-flow and be low dip slightly with respect to the horizontal plane.Can from Fig. 1 and 2 relatively find out the accurate orientation of tripping device 6, Fig. 2 shows the view that turns over 90 ° with respect to Fig. 1.
See from Fig. 1, tripping device 6 comprises multiple parallel thin slices 7, and these thin slices 7 have a kind of branchiess cross section in situation separately, and multiple flowing-path 8 is to form between two adjacent thin slices 7 in situation separately.
According to Fig. 2, in the exemplary embodiment, the mode that tripping device 6 is inclined relative to horizontal is to make these independent thin slices 7 have the side direction gradient of a kind of for example magnitude between 15 ° and 45 ° along its longitudinal length.
The shape of thin slice 7 is to show by the example in Fig. 3 a and 3b.According to the present invention, the direction of these flowing-paths 8 that form between two thin slices 7 in situation separately can change more than once, and according to Fig. 3 a, these thin slices 7 have the waviness of at least two turning points of band on cross section.Repeatedly the result of deflection is, thereby makes water droplet because its inertia can not increase separating power in company with changing direction.In addition, can from Fig. 3 a and 3b, infer and in the same manner, these flowing-path 8 in the vertical directions have roughly cross section uniformly along their route, that is to say and between these thin slices 7, have roughly spacing uniformly.
In addition, can see, according to these two exemplary embodiments of Fig. 3 a and 3b, these thin slices 7 have uniform thickness along its cross section.These thin slices 7 of showing can be therefore produced by metal sheet or webs of plastic are formed especially simply.Even if these thin slices are shaped by injection molding, the moulding of showing also can be especially simply and therefore cost effectively produce.
The separating power of tripping device 6 depends on the distribution of sizes of water droplet substantially.This distribution of sizes can be that the extra spraying by being undertaken by spraying plant 5 is set to a certain extent.Specifically, the shape that thin slice 7 is actual selected, that is to say the spacing between exact profile and these thin slices 7 of thin slice 7, also can defer to expection water droplet size and optimize.
According to Fig. 1, above this tripping device, be provided with a brush device for cleaning 9, can clean these thin slices 7 of tripping device 6 by this brush device for cleaning.In addition or alternately, also can below tripping device 6, provide a brush device for cleaning.Consider to this simple shape of the thin slice 7 shown in Fig. 3 a and 3b, these thin slices also can be especially effectively clean by brush device for cleaning 9.Specifically, can realize the complete wetting of thin slice 7 and therefore clean reliably.
The mode that these thin slices 7 are formed is to make to realize a kind of laminar flow or base layer stream with the variation of flow velocity.
Surprisingly, the shape of the thin slice 7 that separates to optimize for water droplet by means of itself, also dirt separation particle effectively.For this purpose, can use the following fact, that is, by additionally being sprayed by spraying plant 5, most of dust is all combined in water droplet, and then these water droplets are separated very effectively.Compared with prior art, by this tripping device 7, dust by be attached to a greater extent in water droplet and be directly to separate in less degree.
Finally, in Fig. 1, be pointed out that and can further arrange up an other tripping device, in this case, also described above configuration preferably of this single tripping device of explaining 6.
Claims (according to the modification of the 19th article of treaty)
1. one kind for carrying out the wet quenching tower of quenching to hot coke, it is with a coke quencher (2), spray unit (3) with the quenching for discharging coke quenching water in this coke quencher (2) top, with the flue (4) being placed in this coke quencher (2), and with at least one through-flow tripping device (6), this is through-flow tripping device flatly or in vertical direction with pitch angle arrange, and this is through-flow, and tripping device has multiple thin slices (7), each thin slice has a kind of branchiess cross section, multiple flowing-paths (8) are forming in situation separately between two contiguous sliceses (7), and these flowing-paths (8) that form between two contiguous sliceses (7) in situation are separately to change more than once its direction, it is characterized in that,
Arrange a spraying plant (5) in this top, quenching spray unit (3), spray top, unit (3) and arrive at least one tripping device (6) before in this quenching, these coke quenching steams can additionally be sprayed by this spraying plant (5) water, and it is characterized in that, there is no other measures, drip and get back in the coke quenching steam of these risings downwards at these isolated liquid in thin slice place.
2. wet quenching tower according to claim 1, is characterized in that, these flowing-paths (8) have roughly uniform width of one along its route.
3. wet quenching tower according to claim 1 and 2, is characterized in that, these thin slices (7) have the waviness of at least two turning points of a kind of band on cross section.
4. according to the wet quenching tower one of claims 1 to 3 Suo Shu, it is characterized in that, these thin slices (7) have one uniform thickness substantially along its cross section.
5. according to the wet quenching tower one of claim 1 to 4 Suo Shu, it is characterized by, for the brush device for cleaning (9) that this tripping device (6) is cleaned.
6. wet quenching tower according to claim 5, is characterized by, and one for the control device that off and on this brush device for cleaning (9) is activated to set.
7. carry out a method for quenching for the wet quenching tower by as described in claim 5 or 6,
Hot coke is transported to this coke quencher (2) from a coke oven,
With coke quenching water, this hot coke is carried out cooling, thereby form contain steam and dust granules coke quenching steam,
Make these coke quenching steam guidings of rising in this flue (4) by this tripping device (6),
Make in this tripping device (6), to be separated due to the repeatedly deflection along these flowing-paths (8) with the water droplet that is incorporated into dust wherein, and
Come continuously or off and on this tripping device (6) cleaned by means of this brush device for cleaning (9).
Spray top, unit (3) and arrive at least one tripping device (6) before in this quenching, the coke quenching steam of these risings is additionally sprayed by water, and wherein, there is no other measures, drip and get back in the coke quenching steam of these risings downwards at these isolated liquid in thin slice place.
8. method according to claim 7, produces a kind of laminar flow in the flowing-path (8) between these thin slices (7).
9. according to the method described in claim 7 or 8, it is characterized in that, in cleaning course, used and clean water complete wetting with water by means of these thin slices of this brush device for cleaning (9) (7).
Claims (11)
1. one kind for carrying out the wet quenching tower of quenching to hot coke, it is with a coke quencher (2), spray unit (3) with the quenching for discharging coke quenching water in this coke quencher (2) top, with the flue (4) being placed in this coke quencher (2), and with at least one through-flow tripping device (6), this is through-flow tripping device flatly or in vertical direction with pitch angle arrange, and this is through-flow, and tripping device has multiple thin slices (7), each thin slice has a kind of branchiess cross section, multiple flowing-paths (8) are forming in situation separately between two contiguous sliceses (7), it is characterized in that, these flowing-paths (8) that form between two contiguous sliceses (7) in situation are separately to change more than once its direction.
2. wet quenching tower according to claim 1, is characterized in that, these flowing-paths (8) have roughly uniform width of one along its route.
3. wet quenching tower according to claim 1 and 2, is characterized in that, these thin slices (7) have the waviness of at least two turning points of a kind of band on cross section.
4. according to the wet quenching tower one of claims 1 to 3 Suo Shu, it is characterized in that, these thin slices (7) have one uniform thickness substantially along its cross section.
5. according to the wet quenching tower one of claim 1 to 4 Suo Shu, it is characterized by the spraying plant (5) arranging in this top, quenching spray unit (3).
6. according to the wet quenching tower one of claim 1 to 5 Suo Shu, it is characterized by, for the brush device for cleaning (9) that this tripping device (6) is cleaned.
7. wet quenching tower according to claim 6, is characterized by, and one for the control device that off and on this brush device for cleaning (9) is activated to set.
8. carry out a method for quenching for the wet quenching tower by as described in claim 6 or 7,
Hot coke is transported to this coke quencher (2) from a coke oven,
With coke quenching water, this hot coke is carried out cooling, thereby form contain steam and dust granules coke quenching steam,
Make these coke quenching steam guidings of rising in this flue (4) by this tripping device (6),
Make in this tripping device (6), to be separated due to the repeatedly deflection along these flowing-paths (8) with the water droplet that is incorporated into dust wherein, and
Come continuously or off and on this tripping device (6) cleaned by means of this brush device for cleaning (9).
9. method according to claim 8, produces a kind of laminar flow in the flowing-path (8) between these thin slices (7).
10. method according to claim 8 or claim 9, is characterized in that, in cleaning course, is used and cleans water complete wetting with water by means of these thin slices of this brush device for cleaning (9) (7).
The method that one of 11. according to Claim 8 to 10 are described, is characterized in that, sprays top, unit (3) and arrives at least one tripping device (6) before in this quenching, and the coke quenching steam of these risings is additionally sprayed by water.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201110052785 DE102011052785B3 (en) | 2011-08-17 | 2011-08-17 | Wet extinguishing tower for the extinguishment of hot coke |
| DE102011052785.0 | 2011-08-17 | ||
| PCT/EP2012/064234 WO2013023872A1 (en) | 2011-08-17 | 2012-07-19 | Wet quenching tower for quenching hot coke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103890141A true CN103890141A (en) | 2014-06-25 |
Family
ID=46579012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280050650.6A Pending CN103890141A (en) | 2011-08-17 | 2012-07-19 | Wet quenching tower for quenching hot coke |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US20150122629A1 (en) |
| EP (1) | EP2744871A1 (en) |
| JP (1) | JP2014521817A (en) |
| KR (1) | KR20140096022A (en) |
| CN (1) | CN103890141A (en) |
| AR (1) | AR087576A1 (en) |
| CA (1) | CA2845823A1 (en) |
| DE (1) | DE102011052785B3 (en) |
| RU (1) | RU2605975C2 (en) |
| TW (1) | TW201313889A (en) |
| WO (1) | WO2013023872A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| CA2845823A1 (en) | 2013-02-21 |
| KR20140096022A (en) | 2014-08-04 |
| RU2014107329A (en) | 2015-09-27 |
| US20150122629A1 (en) | 2015-05-07 |
| RU2605975C2 (en) | 2017-01-10 |
| DE102011052785B3 (en) | 2012-12-06 |
| AR087576A1 (en) | 2014-04-03 |
| JP2014521817A (en) | 2014-08-28 |
| TW201313889A (en) | 2013-04-01 |
| EP2744871A1 (en) | 2014-06-25 |
| WO2013023872A1 (en) | 2013-02-21 |
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Application publication date: 20140625 |